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Finding the Fourth Proportional to 1,375,787.64, 1,898,482.86 and 772,059

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Solution

The fourth proportional to 1,375,787.64, 1,898,482.86 and 772,059 is: 1,065,383.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,787.64 : 1,898,482.86 = 772,059 : x
  2. Step 2: Convert to fraction form
    1,375,787.64/1,898,482.86 = 772,059/x
  3. Step 3: Cross multiply
    1,375,787.64x = 1,898,482.86 × 772,059
  4. Step 4: Simplify right side
    1,375,787.64x = 1,465,740,778,408.74
  5. Step 5: Solve for x
    x = 1,465,740,778,408.74/1,375,787.64
  6. Step 6: Final answer
    x = 1,065,383.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.